pe·ri·od

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【词性】：n．

【释义】：

❶ 一段时间，一节课：for a period(of time)一段时间．We have four periods in the morning．我们上午有四节课．❷ 时期，时代，(the period)现代：at an earlier period 往昔．the later period of the nineteenth century 十九世纪后期．❸ 周期：the period of the earth地球的周期the period of incubation(疾病的)潜伏期．❹ 【语法】完全句，(pl．)华丽的词藻．❺ 句末的停顿，句号：put a period to sth．结束某事．❻ 【地】纪．❼ (pl．)月经．